Computed Tomography Test CT Equipment and Technology 1

Question 1

What is the primary component responsible for X-ray production in a CT scanner?

Accepted Answer

X-ray tube

Answer

The X-ray tube generates the X-ray beam used for CT imaging through thermionic emission, converting electrical energy into X-ray photons.

Question 2

What technology allows modern helical CT scanners to rotate continuously without stopping?

Accepted Answer

Slip ring technology

Answer

Slip ring technology enables continuous electrical contact between the rotating gantry and stationary components, allowing uninterrupted 360° rotation.

Question 3

What is the primary function of the pre-patient collimator in a CT scanner?

Accepted Answer

To define the width of the X-ray beam along the z-axis

Answer

The pre-patient collimator controls beam width along the z-axis, defining the nominal slice thickness for CT acquisition.

Question 4

Which detector material is most commonly used in modern solid-state CT detectors?

Accepted Answer

Gadolinium oxysulfide (GOS)

Answer

Gadolinium oxysulfide is widely used in modern CT detectors due to its high X-ray absorption efficiency, fast afterglow decay, and mechanical stability.

Question 5

What is the 'gantry' in a CT scanner?

Accepted Answer

The rotating frame housing the X-ray tube and detector array

Answer

The gantry is the large donut-shaped housing that contains the rotating X-ray tube, detector array, and associated electronics.

Computed Tomography Test Practice Test

Computed Tomography Test Practice Test

Computed Tomography Test CT Equipment and Technology 1